KZ700/KZ750L3 subframe reconstruction

Hi all,

I have a KZ700 with a butchered subframe. It has been cut off behind the shock mounts in the past. There is a simple homemade reconstruction on it now, but i'd like to make it proper.
Finding a sub or complete frame seems impossible here, and they seem to be limited to the 700 and L3. Others have different mountings and such.

The only data i can find so far is the image from a part fiche, which is limited at best.


I need to rebuild the rear from the start of the "bridge" to the rear. 

Does anyone have some photo's of the bare frame part, and maybe some measurements on the different mounts?
It won't be stock, but at least it'll be something like it should be